Image encoding method/device, image decoding method/device, and recording medium in which bitstream is stored

An image encoding method comprising:

• performing a first partitioning on a current image into a plurality of blocks;
• and
• performing a second partitioning on a target block into a plurality of sub-blocks,
• wherein the second partitioning uses a quad-tree partitioning or binary-tree partitioning, and
• wherein the current image includes a padded area,
• wherein the padded area is constructed by horizontal copying of adjacent pixels in the padded area.

A non-transitory computer-readable recording medium storing a bitstream that is generated by an image encoding method with an encoding apparatus, wherein the image encoding method comprises:

• performing a first partitioning on a current image into a plurality of blocks;
• and
• performing a second partitioning on a target block into a plurality of sub-blocks,
• wherein the second partitioning uses a quad-tree partitioning or binary-tree partitioning, and
• wherein the current image includes a padded area,
• wherein the padded area is constructed by horizontal copying of adjacent pixels in the padded area.